{"id":2080,"date":"2024-07-19T16:13:20","date_gmt":"2024-07-19T10:43:20","guid":{"rendered":"https:\/\/study.madeeasy.in\/?p=2080"},"modified":"2025-07-16T15:15:52","modified_gmt":"2025-07-16T09:45:52","slug":"hall-effect","status":"publish","type":"post","link":"https:\/\/www.madeeasy.in\/study\/ec\/electronic-devices-circuits\/hall-effect","title":{"rendered":"Hall Effect"},"content":{"rendered":"

What is Hall Effect?<\/h2>\n

The Hall effect is a consequence of the forces that are exerted on moving charge by electric field and magnetic field.<\/p>\n

Statement<\/h2>\n

If a specimen (metal or semiconductor) carrying a current-I <\/em>is placed in a transverse magnetic field B<\/em>, an electric field E <\/em>is induced in the direction perpendicular to both I <\/em>and B<\/em>. This phenomenon, known as Hall effect, is used to determine whether a semiconductor is n<\/em>-or p<\/em>-type and to find the carrier concentration. Also, by simultaneously measuring the conductivity s, the mobility \u00b5 can be calculated.<\/p>\n

Fig. shown below illustrates the Hall effect. The current-I is in the positive x<\/em>-direction and B <\/em>is in the positive z<\/em>-direction. Electrons and holes flowing in the semiconductor will experience a force. (The force on a particle having a charge q <\/em>and moving in a magnetic field.) The force is in the negative y-direction independently of whether the carrier are holes or electrons. This charge accumulation induces an electric field in the y<\/em>-direction. Hence a potential, called the Hall voltage, appears between surfaces 1 and 2.<\/p>\n

\"Hall<\/p>\n

In steady-state, the magnetic field force will be exactly balanced by the induced electric field force or<\/p>\n

\"Magnetic<\/p>\n

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